Gaya APA
Kristianto, L. et al (2007).
Telephone : English special purpose conversational approach (cet. ke-9).
Jakarta:
Kesaint Blanc.
Gaya MLA
Kristianto, Lanny. et al.
"Telephone : English special purpose conversational approach".
cet. ke-9
Jakarta:
Kesaint Blanc,
2007.
Text.